Assignee
JOHNSON CHARLES E
US·4 granted patents·43 citations·filing 1975–2010
Top patents by PatentIndex Score
4 records- 0182US4048369AMethod for controlling allergensJOHNSON CHARLES E·Filed 1975·Granted Sep 13, 1977·22 cites·4 claims
- 0263US8123245B2Stabilized mobile unit or wheelchairJOHNSON CHARLES E·Filed 2010·Granted Feb 28, 2012·4 cites·7 claims
- 0351US7434452B1Method of engine calibrationJOHNSON CHARLES E·Filed 2006·Granted Oct 14, 2008·1 cites·4 claims
- 0444US4909351APlatform attachment for a ladderJOHNSON CHARLES E·Filed 1989·Granted Mar 20, 1990·16 cites·17 claims
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